Frederick a



(NO Model.)

F. A. ROEDER.

BEAM SGALES.

No. 262,905. Patented Aug. 15, 1882.

UNITED STATES PATENT OFFICE.

FREDERICK A. ROEDER, OF CINCINNATI, OHIO, ASSIGNOR OF ONE-HALF TO ALFRED SPRINGER.

BEAM-SCALE.

SPECIFICATION forming part of Letters Patent No. 262,905, dated August 15, 1882. Application filed April 7, 1882. (No model.)

To all whom it may concern: thus pivoted in the same vertical plane, the ter- Be it known that I, FREDERICK A. RoEDER, minal pivot-frames always maintain their pera citizen of the United States, residing at Oinpendicularity and parallelism. Instead of suscinnati, Hamilton county, Ohio,haveinvented pending the scale-pans from the terminal pivnew and useful Improvements in Balances, of ot-frames, I arrange supporting plates or rings 55 which the following isaspecification. F, held by standards ff, above the cross- My invention relates to that class of balpieces of the terminal frames. These may be ances or weighing-scales in which the torsional carried to any convenient height above the elasticity of metal wires or rods is used as the boxing, by which the scale is preferably sur- I0 pivotal supports for scale-beam and pendants; rounded for security and convenience. 6c and it consists in animproved construction of It will be obvious that the spirit of my insuch scales, whereby greater strength is sevention embraces three or any greater numcured without sacrificing the sensitiveness ber of scale-beams, theybeing torsionally supwhich gives such balances their value in deliported at the center in the same vertical cate manipulations, and whereby, also, the balplane, and torsionally connected at their ends 65 ance is adapted to more convenient use by by frames similar to those described. druggists, grocers, &c. It will be seen that by the arrangement The preferred construction of the apparatus shown in the drawing the weight of the scaleisillustrated in the drawingaccompanying this beams, pans, and contents is distributed 2o specification, which shows my improved balthrough the six horizontal wires 1) b b b b I), 70 ancecomplete,exceptingas to theboxinggwhich all acting torsionally. Itis obvious,therefore, is removed to exhibit thestructure more clearly. that very small wires may be used, having a In this, as in the said former invention, the very minute torsional resistance, while at the scale-beam A is centrally pivoted to and upon same time the general strength and rigidity of a horizontally-stretched wire, and carries at the apparatus are maintained.

the ends frames holding wires in a similar The scale-beamAis provided witha pointer, state of tension as the pivotal supports of the E,projecting upward from the center, to which scale-pans. adjustable weights to and w are secured by The central supporting-wire, b, is securedin screw-threads, so as to regulate the center of a frame consisting substantially of two diaggravity. Strengtheningcords e 0 connect the 80 onally arranged crossbars, B B around pointer E with the ends of the beam A to prewhose ends the wire is stretched, forming a vent deflection of the latter when sustaining rectangular frame, which is supported above weights. The pointer'E plays in the usual the base-plateD by standards G 0, one at each manner across a graduated scale-piece, G, sus- 5 side. tained above the central frame by standards 8 The terminal pendent frames areconstructed g g.

,- of cross-bars B B and a stretched wire, D in As a means of preventing movement of the precisely the same manner. scale-beam when not actually in use, I provide The scale-beam A, which is preferablyathin an arrester consisting of a shaft, 1, arranged o metallic tube, is secured to the central and teracross the base-plate D, parallel with the scale- 0 minal pivot-wires,b b 12 by passing the Wires beams, on which are secured two eccentric through parallel cross slots or apertures cams, c 0, operating beneath two springthrough the tube in the same plane, and setongues, H. The latter are secured atone end curing the wires to the beam by soldering to the base D, and are so arranged that when 5 when all parts are adjusted. I add an auxilelevated by the cams 0 they impinge against 5 iary scale-beam, A, below and parallel to the and support the outer ends of the auxiliary first, securing it to the wires 1) b 11 which scale-beam from below. The outlet the shaft form the corresponding opposite sides of the I in the completed apparatus projects through central and terminal pivot-frames in precisely the boxing and is furnished with amilled head the same manner. The two scale-beams being or drank for manipulation. 10o

A finger, 01, may be arranged to project centrally downward from thelower scale-beam, A of such a length as to come in contact with the base-plate whenever the pivot-wires are deflected beyond a given angle by the superposed weight, and thus prevent injuries to the scale by overloading. It can also .be usedfor supporting an adjustable weight to changethe center of gravity, as may be desired.

Having described my invention,Iclaiin and desire to secure by Letters Patent 1. In a torsional pivot-balance one or more auxiliary scale-beams pivoted in the same vertical plane with the main beam, and connected; therewith through the terminalpivot-frames, I

substantially as and for the purpose specified.

2. In a torsional pivot-balance, the combination of the mainand auxiliary beams A A and central and terminal pivot-frames, a: 3 z, substantially as set forth.

3. The shaft I, provided with eccentric cams c, in combination with the springs H, as amotion-arrester for balances, arranged and operating substantially as set forth.

In'testimony whereof I have hereunto set my hand in the presence of two subscribin g witnesses.

FREDERICK A. ROEDEE.

Witnesses:

L-,. M. HosnA, GEO. B. MUSGHLER. 

